Background
She was the eldest child and daughter of Walther Franz Xaver Anton, 5th Prince of Dietrichstein and his second wife Karolina Maximiliana, a daughter of Count George Christoph of Proskau.
She was the eldest child and daughter of Walther Franz Xaver Anton, 5th Prince of Dietrichstein and his second wife Karolina Maximiliana, a daughter of Count George Christoph of Proskau.
In Vienna on 25 February 1717, Maria Josepha married with Štěpán Vilém (26 December 1679 – 12 March 1749), Count and since 1746 Prince Kinsky of Wchinitz und Tettau. They had five children:
Evžen František (1719 – 1726). Františka Josefa (born and died 1720).
Maria Theresia Josepha Maximiliana (13 September 1721 – 13 August 1751), married on 18 August 1743 to Georg Olivier, Count Wallis of Carighmain.
Charlotte (1723 – 1728). František Josef (11 October 1726 – 23 September 1752), 2nd Prince Kinsky of Wchinitz und Tettau.
Married on 28 August 1748 to Countess Maria Leopoldina Pálffy.